Fundamental Technologies

Voyager LECP Pages

Cruise 6

(From Document 618-306, Revision D)

The LECP EDR science record is designed to a 24 minute instrument measurement period. Any data not present during the instrument measurement will be filled with binary zeroes.

A logical record corresponds to an instrument measurement period and in this instance is also the science physical record structure.

The science logical/physical record structure is diagrammed in Figure 9.3-1.

Figure 9.3-1. LECP EDR Tape Record (Science)

Standard Header
(60 32-bit Words)		 Subheader
(8 32-bit Words)		 Science Data
(1440 32-bitWords)		 = 75 MF
(1508 32-bit
Words) in CR-6

Figure 9.3-3 and Table 9.3-1 describe the structure and contents of the LECP science record subheader.

Figure 9.3-3. LECP Science Record Subheader Format, CR-6

Segment 1

Word

 Bits
31                  16                  0		 31                  16                   0
1 LECP CMD WRD #1
MF 5

LECP CMD WRD #2
MF 15

 LECP CMD WRD #3
MF 25		 LECP CMD WRD #4
MF 35
3 LECP CMD WRD #5
MF 45		 LECP CMD WRD #6
MF 55		 LECP CMD WRD #7
MF 65		 LECP CMD WRD #8
MF 75
5 Spare Spare
7 Spare Spare

MF 1-75

Segment 2

Word

 Bits
31                  16                  0		 31                  16                   0
1 Spare Spare
3 Spare Spare
5

LECP CMD WRD #9
MF 85

LECP CMD WRD #10
MF 95

 LECP CMD WRD #11
MF 105		 LECP CMD WRD #12
MF 115
7 LECP CMD WRD #13
MF 125		 LECP CMD WRD #14
MF 135		 LECP CMD WRD #15
MF 145		 Spare

MF 76-150

Figure 9.3-4 defines the science data word.

Figure 9.3-4. LECP Science Data Word, CR-6

Spare

LECP Science Data Word
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Figure 9.3-5 and Table 9.3-2 define the science record data block structure and contents. Figure 9.3-6 and Table 9.3-3 define the LECP data arrangement.

Next: Cruise 7 (Cruise 5a)

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Last modified 10/17/00, Tizby Hunt-Ward
tizby@ftecs.com